Removing deposit from hot water piping



Oct. 21, 1941. L. A, KLING REMOVING DEPOSIT FROM HOTv WATER PIPING Filed July l2, 1958 GELDj 1NVENT0R LDL/JEH .KLINKE ATroRNEY.

patented Oct. 21, 1941 REMOVIING DEPOSIT IFRM )BIOT WATER IPHENG Louisa. Killing, Detroit, Mich. application 'my iz, reas, serial Nn.'z1s,sos

(ci. 14u-1) x 3 Claims.

water inthe pipe I, breaking up the cracked and loosened'deposit. The cold water .faucet 3 is now closed and the cock l2 opened wide allowing the Water to ow out of the pipe i carrying with it the loosened deposit. 'I'he broken-up deposit as it moves along with the discharging W water has a scouring action removing any an apparatus used in, and embodying my invention;

Figure 2 is a detail sectional view showing a modified form 'of operating valve;

Figure 3 is a view of a pipe partly in section showing a form of the deposit.

I indicates the piping to be cleaned. A high temperature causes local deposits which usually take the form of a ring, la, having a conical inferior surface diverging toward both ends, but the divergence on the discharge side is much more abrupt as shown in Figure 3. Sometimes the ring is not complete but is discontinuous at the top.

2 is a hot, and 3, a cold water faucet in a `water pipe system. 4, is a pump having an intake passage and a discharge passage 6. 'I,'

is a check valve opening inward in the passage 5 and 8 a check valve opening outward in the passage 6. 9,- is a hose leading from the cold water faucet 3 to the intake 5 of the pump andI I0 is a similar hose leading from the discharge port 6to the hot water faucet.

lateral branch.

The ends of the hose are preferably rmly securedto the faucets 2 and 3 by chains 2a and 3a and the conventional coupling shown.

The operation of the above described apparatus is as follows:

II, is a Tconnection in the hose IIJ, having a cock I2 inv its by hand to thefree end of the lever I4 is multiplied. With larger pipes a. larger pump would remnant deposit in the piping. This operation may be repeated several times if required.

The cold water forced into the pipe I comes first into direct contact with the hot innerK surface of the deposit and also acts first upon the steeper side, or end, of the same as does also said impulse or blow from the action of the pump while the cold water is entering the conduit I and is in motion which is varied 'by the impulse given it by the pump.

Should it be desirable to give a stronger impulse, or blow, to the water than can conveniently be given by the direct manipulation of the piston and piston rod Vfrom the handle at the upper end ofthe latter, I have plvoted a link I3 at its lower end to the base of the pump 4, anda, horizontal lever I4 to the upper end of said link, the latter beingfalso pivoted intermediate' its ends -to `the upper yend of the piston rod of the pump. In this wayv the lforce applied The deposit must be broken in small pieces to allow them to pass through the sniall passage 3 opened. The cold water then runs from thef latter through the hose 9 and I0 past the valves B and 1, pressing the hot water vback in the vpiping I, coming in contact with and suddenly cooling the deposit onthe wail of the hot water piping I, causing said deposit to crack and become loose.

The pump 4 is very forcibly operated impart- 'ing a strong impulse, or blow through the cold in the faucet.

In case a .cold water faucet is not available, a reservoir, or pail, I5, may be'substituted and the end of the hose 9 may be inserted therein, and the cold water drawn from the pail I5 and forced into th'e hot water piping as above described.

AIf desired, a three-way cock I2a (Figure 2) may be substituted for the cock I2 and fitting II.

I claim':

1. A method of removing a deposit from the interior of a conduit comprising running'hot liquid through the conduit in one ddirection until ,the conduit. is raised to a high temperature, running cold liquid through the conduit in the opposite direction to crack the deposit by sudden change in temperature, and applying a series of sharp, percussive impulses directly to the cold liquid while ilowing through the conduit to break liquid through the conduit in the first-named direction to ilush out the particles of deposit.

3. A method of removing a deposit from a. conduit comprising heating the conduit and deposit by running hot liquid through the conduit.

vsuddenly` cooling the deposit by running cold liquid through the conduit in the reverse direction causing cracking of the deposit, simultaneously applying a series of sharp, hammer-like blows .to the cold liquid by means of a. water pump intermediate the source of cold liquid and the conduit to break the deposit into small particles, and iiushing out Athe particles of deposit by running liquid through the conduit.

LOUIS A. KLING. 

